[PATCH] x86_64: Implemenent machine_emergency_restart
It is not safe to call set_cpus_allowed() in interrupt
context and disabling the apics is complicated code.
So unconditionally skip machine_shutdown in machine_emergency_reboot
on x86_64.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/x86_64/kernel/reboot.c b/arch/x86_64/kernel/reboot.c
index d4c45ff..3d1cc09 100644
--- a/arch/x86_64/kernel/reboot.c
+++ b/arch/x86_64/kernel/reboot.c
@@ -109,16 +109,10 @@
local_irq_enable();
}
-void machine_restart(char * __unused)
+void machine_emergency_restart(void)
{
int i;
- printk("machine restart\n");
-
- if (!reboot_force) {
- machine_shutdown();
- }
-
/* Tell the BIOS if we want cold or warm reboot */
*((unsigned short *)__va(0x472)) = reboot_mode;
@@ -143,6 +137,16 @@
}
}
+void machine_restart(char * __unused)
+{
+ printk("machine restart\n");
+
+ if (!reboot_force) {
+ machine_shutdown();
+ }
+ machine_emergency_restart();
+}
+
void machine_halt(void)
{
}
diff --git a/include/asm-x86_64/emergency-restart.h b/include/asm-x86_64/emergency-restart.h
index 108d8c4..680c395 100644
--- a/include/asm-x86_64/emergency-restart.h
+++ b/include/asm-x86_64/emergency-restart.h
@@ -1,6 +1,6 @@
#ifndef _ASM_EMERGENCY_RESTART_H
#define _ASM_EMERGENCY_RESTART_H
-#include <asm-generic/emergency-restart.h>
+extern void machine_emergency_restart(void);
#endif /* _ASM_EMERGENCY_RESTART_H */